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Diffstat (limited to 'tmake/example/hello.cpp')
-rw-r--r-- | tmake/example/hello.cpp | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/tmake/example/hello.cpp b/tmake/example/hello.cpp deleted file mode 100644 index 4868c4d..0000000 --- a/tmake/example/hello.cpp +++ /dev/null @@ -1,102 +0,0 @@ -/**************************************************************************** -** -** -** Copyright (C) 1992-1998 Troll Tech AS. All rights reserved. -** -** This file is part of an example program for Qt. This example -** program may be used, distributed and modified without limitation. -** -*****************************************************************************/ - -#include "hello.h" -#include <qpushbutton.h> -#include <qtimer.h> -#include <qpainter.h> -#include <qpixmap.h> - - -/* - Constructs a Hello widget. Starts a 40 ms animation timer. -*/ - -Hello::Hello( const char *text, QWidget *parent, const char *name ) - : QWidget(parent,name), t(text), b(0) -{ - QTimer *timer = new QTimer(this); - connect( timer, SIGNAL(timeout()), SLOT(animate()) ); - timer->start( 40 ); - - resize( 200, 100 ); -} - - -/* - This private slot is called each time the timer fires. -*/ - -void Hello::animate() -{ - b = (b + 1) & 15; - repaint( FALSE ); -} - - -/* - Handles mouse button release events for the Hello widget. - - We emit the clicked() signal when the mouse is released inside - the widget. -*/ - -void Hello::mouseReleaseEvent( QMouseEvent *e ) -{ - if ( rect().contains( e->pos() ) ) - emit clicked(); -} - - -/* - Handles paint events for the Hello widget. - - Flicker-free update. The text is first drawn in the pixmap and the - pixmap is then blt'ed to the screen. -*/ - -void Hello::paintEvent( QPaintEvent * ) -{ - static int sin_tbl[16] = { - 0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38}; - - if ( t.isEmpty() ) - return; - - // 1: Compute some sizes, positions etc. - QFontMetrics fm = fontMetrics(); - int w = fm.width(t) + 20; - int h = fm.height() * 2; - int pmx = width()/2 - w/2; - int pmy = height()/2 - h/2; - - // 2: Create the pixmap and fill it with the widget's background - QPixmap pm( w, h ); - pm.fill( this, pmx, pmy ); - - // 3: Paint the pixmap. Cool wave effect - QPainter p; - int x = 10; - int y = h/2 + fm.descent(); - int i = 0; - p.begin( &pm ); - p.setFont( font() ); - while ( t[i] ) { - int i16 = (b+i) & 15; - p.setPen( QColor((15-i16)*16,255,255,QColor::Hsv) ); - p.drawText( x, y-sin_tbl[i16]*h/800, &t[i], 1 ); - x += fm.width( t[i] ); - i++; - } - p.end(); - - // 4: Copy the pixmap to the Hello widget - bitBlt( this, pmx, pmy, &pm ); -} |